# Time Calibrator vs TimeWave

The clearest difference is rating: TimeWave at 4.4 against Time Calibrator's 2.7. TimeWave also leads on update cadence (weekly vs every 8 months) and ratings volume (18 vs 3). Time Calibrator's advantage is in-app purchases (none vs 2) and review sentiment (33% vs 0%). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. TimeWave sells 2 one-off in-app purchases. Time Calibrator asks for nothing beyond the download.

TimeWave holds the better App Store score, 4.4 against 2.7. That said, the two scores are not equally well evidenced: TimeWave has 18 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 33% of Time Calibrator's written reviews are positive against 0% of TimeWave's, so the app with the better star average is not the one people write more warmly about.

Time Calibrator ships an update every 8 months, TimeWave weekly. The most recent releases landed on September 21, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Time Calibrator | TimeWave |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.7 (3 ratings)](https://appshunter.io/ios/app/time-calibrator/id786988278/reviews) | **[4.4 (18 ratings)](https://appshunter.io/ios/app/timewave-atomic-watch-sync/id6779167516/reviews)** |
| Number of ratings | 3 | **18** |
| Positive reviews | **33.3% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Weekly** |
| Monetization | Free | Free |
| Size | 8 MB | 3 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Atomtime Suisse S.A.](https://appshunter.io/developer/786988281) | [毅 何](https://appshunter.io/developer/1477138542) |

## What reviewers say

### Time Calibrator

[App page](https://appshunter.io/ios/app/time-calibrator/id786988278)

This utility app provides precise local time and date information by connecting to an atomic clock server in Switzerland. It utilizes quantum technology to transmit this data at the speed of light directly to compatible i-Atomic watches.

**Highlights:** Accurate global time and date, Connects to Swiss atomic clock server, Quantum technology data transmission, Direct communication to i-Atomic watches, Light signal synchronization

**Features:** macOS Compatibility

**In-app purchases:** none


### TimeWave

[App page](https://appshunter.io/ios/app/timewave-atomic-watch-sync/id6779167516)

This app simulates radio-controlled clock signals to help your watch synchronize its time when terrestrial signals are unavailable. It offers guides for popular watch brands and checks environmental conditions before transmission.

**Highlights:** Radio-controlled clock signal simulation, Support for multiple international time signals, Environment pre-check and recommendations, Smart output tuning for various audio paths, Local time mode for overseas watches, Watch-specific synchronization guides, Live signal visualization and sync history

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy Me a Coffee | $0.99 | one-time |
| Lifetime Membership | $3.99 | one-time |


## Frequently asked questions

### Is Time Calibrator free?

Time Calibrator is free to download, with no in-app purchases.

### Is TimeWave free?

TimeWave is free to download, with in-app purchases available.

### Which has better reviews, Time Calibrator or TimeWave?

TimeWave is rated higher. Time Calibrator averages 2.7 out of 5 from 3 ratings, while TimeWave averages 4.4 from 18 ratings.

### Do Time Calibrator or TimeWave have ads?

Neither Time Calibrator nor TimeWave shows ads.

### Which is updated more often, Time Calibrator or TimeWave?

Time Calibrator ships an update every 8 months, and TimeWave weekly. Most recently, Time Calibrator was updated on September 21, 2026 and TimeWave on October 8, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*